Home / 15,678.72-23,518.62-5,148.96

Finding the Fourth Proportional to 15,678.72, 23,518.62 and 5,148.96

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Solution

The fourth proportional to 15,678.72, 23,518.62 and 5,148.96 is: 7,723.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.72 : 23,518.62 = 5,148.96 : x
  2. Step 2: Convert to fraction form
    15,678.72/23,518.62 = 5,148.96/x
  3. Step 3: Cross multiply
    15,678.72x = 23,518.62 × 5,148.96
  4. Step 4: Simplify right side
    15,678.72x = 121,096,433.64
  5. Step 5: Solve for x
    x = 121,096,433.64/15,678.72
  6. Step 6: Final answer
    x = 7,723.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.